Collect. Czech. Chem. Commun.
1992, 57, 2367-2373
https://doi.org/10.1135/cccc19922367
Structure of 2,3,4,5-Tetra-O-acetyl-6-amino-6-deoxy-D-allonolactam
Jan Ondráčeka, Jaroslav Havlíčekb, Karel Kefurtc, Jiří Jarýc, Jiří Novotnýa and Bohumil Kratochvíla
a Department of Solid State Chemistry, Prague Institute of Chemical Technology, 166 28 Prague 6
b Department of Organic Chemistry, Prague Institute of Chemical Technology, 166 28 Prague 6
c Department of Chemistry of Natural Compounds, Prague Institute of Chemical Technology, 166 28 Prague 6
Abstract
The crystal structure of 2,3,4,5-tetra-O-acetyl-6-amino-6-deoxy-D-allonolactam was solved by direct methods and refined anisotropically to R = 0.085 for 1345 unique observed reflections. The title compound crystallizes in A2 space group with the lattice parameters a = 11.756(4), b = 8.139(3), c = 23.713(11) Å, β = 116.71(4)°, V = 2027(2) Å3, Z = 4. The ring of 2,3,4,5-tetra-O-acetyl-6-amino-6-deoxy-D-allonolactam adopts the 4C1,N(D) conformation with the planar arrangement of the C(6)-NH-C(1)O-C(2) atoms. In the crystal structure the adjacent molecules of this lactam are bonded by one intermolecular hydrogen bond, forming a helical chain.
